chore: added some suggesttions

Signed-off-by: Manish Dait <daitmanish88@gmail.com>

Author: manishdait

src/hiero_sdk_python/transaction/transaction.py

@@ -423,7 +423,7 @@ def is_signed_by(self, public_key):
                 return True
         return False
 
-    def build_transaction_body(self) -> transaction_pb2.Transaction:
+    def build_transaction_body(self) -> transaction_pb2.TransactionBody:
         """
         Abstract method to build the transaction body.
 

tests/integration/file_append_transaction_e2e_test.py

@@ -330,12 +330,13 @@ def test_file_append_chuck_transaction_can_execute_with_manual_freeze(env):
         .set_file_id(file_id)
         .set_chunk_size(1024)
         .set_contents(content)
-        .freeze_with(env.client)
+        .set_transaction_id(TransactionId.generate(env.client.operator_account_id))
+        .set_node_account_id(AccountId(0,0,3))
+        .freeze()
     )
 
-    # tx.sign(env.client.operator_private_key)
+    tx.sign(env.client.operator_private_key)
 
-    print(tx.get_required_chunks())
     receipt = tx.execute(env.client)
 
     assert receipt.status == ResponseCode.SUCCESS

tests/unit/mock_server.py

@@ -134,10 +134,10 @@ def _find_free_port():
         port = s.getsockname()[1]
 
         # If we get the tls port 50212 port skip it
-        if port in [50212]:
+        if port == 50212:
             return port + 1 
-        
-        return port 
+
+        return port
 
 
 class RealRpcError(grpc.RpcError):
@@ -173,17 +173,15 @@ def mock_hedera_servers(response_sequences):
         nodes = []
         for i, server in enumerate(servers):
             node = _Node(AccountId(0, 0, 3 + i), server.address, None)
-
-            # force insecure channel
-            node._get_channel = lambda: _Channel(
-                grpc.insecure_channel(str(node._address))
-            )
-
             nodes.append(node)
 
         # Create network and client
         network = Network(nodes=nodes)
         client = Client(network)
+
+        for node in client.network.nodes:
+            node._address = node._address._to_insecure()
+
         client.logger.set_level(LogLevel.DISABLED)
         # Set the operator
         key = PrivateKey.generate()